Amplifying-horn.



No. 814,848. "IRATENTED MAR. 13, 1906. E. R. JOHNSON.

AMPLIFYING HORN.

APPLIUATION FILED FEB. 9, 1904.

A T TOBNEY.

' of the h hi .llerion, Montgomery county,

tion materially affects UNITED STATES PATENT OFFICE.

ELDRHJGE R. JOHNSON. OF MIIRIOX, l QSXSYLYANIA, ASSIGXOR TO VICTOR; TALKING MACHINE (.(DHAN'L A CURPORATlON OF SEW J ERSFY.

AMPLlFYlNC-P'HORN- Specification of Letters fastens.

lie/tented Harsh 13, 1806.

O iginal application filed Felix-nary 12,190338e1ialll'm 143,060. Divided and this nppiinaiinn filed February 9,1904. Serial To all whom it Hwy concern:

Be it known. that I, Emninon ii. Jonxsox. State of Pennsylvania, have invented certain new and useful Improvements in Annlifying l-loms, of which the following is a lull, clear, and com lets disclosure.

T e object of this form of my invention is to pro vide an amplifying-horn, principally for use with talking-machines, of such a character that the same will have all the nmteriul advantages of a single horn connected directly to the sound hox, but without having the disadvanta es due'to long passages of small and practice. a; constant diameter, to the weight el portion of the amplifying horn, and to abru it turns in connecting-tubes.

This app icution is adivision of in prior 9. plication, filed February 12, 1903. Serial 0. 143,060, which covers certain features of construction of talking inschincs which are shown, but not claimed herein. 7

The subject-matter of this iliitii3fi porticularly pertains to the sound-conveying portions considered as a continuous tapering horn having joints therein to allow move ment of the sound-box and the adjustment of the position. of the bell port-ion of the horn.

In talking-machines n'ith which amplifying-homs are used for delivering the reproduced sounds it is desirable to obtain the highest degree of utility and volume of tone that is possible. io this end large horns are used; but the weight of such horns must he he distributed as not to cause any bearing upon the sound-box to increase the weight on the stylus 01'- needle or otherwise interfere with the free movement t'hercof, lierotofore the amplifyin -horn inth'e usual form of talkingmachines ms been carried by a pivoted arm to the .cnd of which is attached the soundbox, which has direct communication with the small end of said arm,and suchn ('onstructhe operation of the sound-box when the horn is changed in direction or position or vurie-d in siz.

7 One special ob'ect, therefore, of Hi) i!l\'t'1i. tion is to covi e such an ninplif ing-horn that the a act will he the some as t ougzh thrhoyh were connected directly to the soundhox, as in the former t pes of talking-inn mnetcr thereof chines, without the disc vantages due to the wcight of the horn and without em loying long passages of sn all and practical constant' diameter, whi e tho larger end of the horn mavhedireeted to any point of the compass without niiccting the sound-box. or ths position of the machine. 1

For a full, clear, and exact description of that ort-ion of my invention to hccoverod by this application reference may be had to the following specification and to the Mann pnnying drawings, forming a. part thereof, ml

which Figure 1 is a side elevation of my improved tnikin machine; Fi 2, a horizontal sectional view 0% the small or hollow arm portion of the sinpiifying-horn, showing means tonllow of the vertical movement of the sound-hon; Fig. 3, a sectional .view showing moans wherehy the larger portion of the horn is sdjnstahiy mounted and the holiowsrrns or lower portion of the horn is pivoted so as to communicate therewith: Fig. 4, e piss view of the end of the support for the larger portion of the am liking-horn; Fig. 5, a View of the yoke for lioldin the some in position u on its support, and 'ig. 6 a plan view of the ollon' arm or pivoted portion of the ampliiylng horn.

The numeral 1 indicates the usual motorcusilig nliow which revolves the usual turn toliln 2 end upon which is carried the soundrocord 3. At one side of the casing 1 o bracket or nun -i is provided. which is similar in shape to those nlrcady in use cxccrting its upper end portion. 'lhisuppvr 0m portion 5 consists of o ring; 6, having a lmr 7 across one di- Thc boll portion 9 of amplifving-horn is prmidcd at its cud with a flan ii, which is ndnpu-d to be seated upon t 1e rings of the support -l. The upper end of the support 5 is provided ith :1 lint poi-{ion 8, huvingn screw-bolt 3O thou-in. L'ponthis' iiaj tlmrtion a yoke 1015 adopted to be fixed by t 10 thunili-avi'ow l1. lho arms 0 this )iikc I!) pro'icvt ovo-r the ring (i and are adapted to press upon ho llmigc Eleni tin lmll pub tion; 1' the :1inplil'ying-lun'n. nml thereby 11 tnin said portion in position. iivud that this construction enables the beli portion of the horn in liodirvctcd at any un glilmriz zonlnll in send tlu sound to any point which (hull-v or ('nlivcnicim inn l3 nutc. Tho illlllri n1 tlw yoke Hini'c slightly it will in: llucurved and are made of spring material, so that the bell portion of the horn may be we ilytplaced in position and removed.

pon t e arm 4 a bossor projection 12 is provided hich is recessed internally to provide a socket for a bearin -block 13, which is forced upwardly by a coified spring 14. The horizontally-pivoted portion 29 of the amplifying-horn. is curved upwardly and termi- Io nates in a ring 15, having spider-arms 16 across two diameters thereof. Upon the elbow or curve of the horizontally-pivoted section of the horn is provided a boss 17, having a hole 18 therein which corresponds 1 5 with a'hole 19 in the spider at the end of -said curved portion. A vertical pivot pin or bar 20 passes through these holes or openings and is retained in position by the set-screw .21. The lower end of this pivot bar 20 has a bear- :0 ing in the spring-pressed block 13 and its upper end enters the bearing 22 in the bar 7 of the support 4'. The parts are of such a size and are so adjusted that the upper end of the pivoted'portion of the horn will enter the ring 6 ,for a short distance, but suflicient space is left between said parts to allow said pivoted portion to swing free] and yet to provide-a practically sound-tig t'joint.

' B' the above-described construction it willbe seen that the ring 6 forms not only a -su port for the delivery portion 9 of theam plL iying-horn, but also form's a coupling between the portion 29,01 the amplifying-horn, formi a part of the reproducing mechan- 3 5 ism an the portion 9, and although the ring titelescopes/wit-h the curved orti'on of the section 29of the amplifyingorn, yet said rin merel provides a connecting element an may made as narrow as consistent 10 with strength to bring the two sections of the amplifying-horn!) and 29in as close proximity as is desired, therebypractic'ally making said'sections or portions 9 and 29 one continuously-tapering horn.

The joint for allowing a vertical move-' ment to the sound-box is constructed as follows: The inner or smaller end ofthe horizontallyp'ivoted in -horn is provi'r ed with a stra qr ring 23,

5 w iich is adapted to receivean'd orm a hear ing or socket for. the end of a semicircular piece of tubin 24.- The end of this piece of tubing 24 is eld inposition by suitable fla e 25 and by a cap 26, which also serves to c ose the out: I end thereof. To the other end of the curved tubin plate 27, which carries ,1; e usual sound-box 28. It will be seen that bythis construction the sound bofx is brought l n'aotically into alinement with the end of t e horizontallypivoted portionof the horn and is therefore.

on a radius from the axis of the pivot-bar 20. B the constructions above described it will seen that I have provided a very simortion 29 of the amplify- 24 is attached the ple, elficient, and attractive means for conhorizontal move ductin the fsound-waves generated in the sound- '01: through the. amplifyi -horn to any point desired. The fact that al portions of the conducting tube or horn are tapered allows the'sound-waves to advance with a regular'and natural increase in their wave fronts in a manner similar to that of ordinal-v musical instruments, obviating the disa vantages due .to long passages of small an practically constant diameter having abrupt turns. he means for supporting the bell portion 9 of the horn also provides afirm su ort therefor and are placed at a point in t e orn where the same 18 not so small as to rc-. quire special means for strengthening its supcplorting portion.

anges in details may be made without departin from the spirit and scope of my invention; ut,

Having described the nature thereof, what I claim, and desine to protect by Letters Patent of the United States, is

1. A ta ering amplifying-horn hav independent y-supported movable coupl sections.

;2. A tapering amplif ing-horn' having independently supporter laterally movable coupled sections.

3. A tapering amplifying-horn having two tapering radial sectlons connected by a'vertically-curved' portion, said sections movable about a vertical axis.

4. -A tapering amplifying-horn having two tapering radial sections in different horizonta planes and movable about a vertical axis.

5. A tapering amplifying-horn having two ta ering radial sections independently mo'v- .ab e about a vertical axis.

6'. A tapering amplifying-horn having two independentl -supported radial taperin sections, movabie' about a vertical axis, sai sec tions lyin in 'substantiall parallel planes and mova le only in saidp anes.

I 7.. An amplifying-hem, comprising a continuously-tapering tube having a oint to allow a movement of one end of said horn in relation to the. other, said horn supported at Said 'oint,

. 8. An ampliiying-horn, comprising a con tinuously-tapermg tube havin a joint in the tapering portion thereof to a ow independ ent lateral movement of the ends thereof in .diii'erent horizontal planes, said horn being supported at said joint.

9. An' amplifying-horn, comprising a continuously-tapermg tube aving a' joint in the said tube, the curved poitionof said horn shaped tube tapering from end to end loving connecting sections thereof lying in substantially parallel lanes.

11. An em ifying-horn; comprising a tepering curve tube, said tube being pivoted on asubstantially vertical oxis to allow a horizontal movement of the smaller end of said tube, the curved portion of said horn connecting sections thereof lying in substantially 'pamllel planes, said axis passing through or adjacent said curved portion.

12. An amplifying-h orn, comprising avsub stantially u-shaped tube ta ermg from end to end, having substantially orizontal arms the curved portion of said tube being pivote on a substantially vertical axis, about which said ln'ms swi 13. An am ying-horn, conipris'in a U- -movement of "head this 8th Witnesses:

its curved portion supported on a, substan- 20 orted and capable of adjustment to swing m difi'erent directions,

In witness whereof I hove hereunto set my day of February, 1904. ELDRIDGE R. JOHSSON.

Joni: F. GRADY, J. Hmmnnson. 

